<?php
/*--------------------------
	file:	mail.class
	intro:	邮件发送类
--------------------------*/
if(!defined('MIDP')) {
	exit('Access Denied');
}
/*
###	mail.class.php
	牛行网邮件发送类
	说明：例子如下
*/

/*	$smtpserver = "smtp.sina.com";
	$smtpserverport =25;	
	$smtpusermail = "corrie@sina.com";
	$smtpemailto = "corrie@sina.com";
	$smtpuser = "corrie";	
	$smtppass = "826022912";
	$mailsubject = "测试邮件主题!";	
	$mailbody = "This is a test mailsf 这里也是中文";	
	$mailtype = "TXT";
	
	
	$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
	$smtp->debug = TRUE;//是否显示发送的调试信息	
	$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);*/	
?>
<?php
class smtp{	
	/* Public Variables */
	var $smtp_port;	//SMTP服务器端口
	var $time_out;	
	var $host_name;
	var $log_file;	
	var $relay_host;	
	var $debug;	
	var $auth;	
	var $user;	
	var $pass;	
	var $charset = "utf-8";
	var $postname = "牛行网";
	var $encode = "base64";
	/* Private Variables */
	var $sock;	
	/* Constractor */	
	function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass){
		$this->debug = FALSE;
		$this->smtp_port = $smtp_port;	
		$this->relay_host = $relay_host;	
		$this->time_out = 30; //is used in fsockopen()
		$this->auth = $auth;//auth
		$this->user = $user;
		$this->pass = $pass;	
		$this->host_name = "localhost"; //is used in HELO command
		$this->log_file = "";
		$this->sock = FALSE;
	}	
	/* Main Function */
	
	function sendmail($to, $from, $subject = "", $body = "", $mailtype,  $cc = "", $bcc = "", $additional_headers = ""){
		//$charset = 'utf-8';
		if($this->charset!='utf-8'){//语言编码设置
			$subject = iconv('uft-8',$this->charset,$subject);
			$body = iconv('uft-8',$this->charset,$body);
		}
		$mail_from = $this->get_address($this->strip_comment($from));
		$body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
		$header .= "MIME-Version:1.0\r\n";
		if($mailtype=="HTML"){
			$header .= "Content-Type:text/html; ";
		}elseif($mailtype=='TXT'){
			$header .= "Content-Type:text/plain; ";
		}elseif($mailtype=='MUTI'){
			$header .= "Content-Type: multipart/alternative; ";
		}
		$header .= "charset=".$this->charset."\r\n";
		
		switch($this->encode){//编码设置
			case 'base64':$subject = $this->base64($subject);
						$body = chunk_split(base64_encode($body));
						$postname = $this->base64($this->postname);
						break;
		}
		$header .= "Content-Transfer-Encoding: ".$this->encode."\r\n";

		$header .= "To: ".$to."\r\n";
		if ($cc != "") {
			$header .= "Cc: ".$cc."\r\n";
		}
		$header .= "From: ".$postname." <".$from.">\r\n";
		$header .= "Subject: ".$subject."\r\n";
		$header .= $additional_headers;
		$header .= "Date: ".date("r")."\r\n";
		//$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
		list($msec, $sec) = explode(" ", microtime());
		$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
		$TO = explode(",", $this->strip_comment($to));
		
		if ($cc != "") {
			$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
		}
		if ($bcc != "") {
			$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
		}
		$sent = TRUE;
		foreach ($TO as $rcpt_to) {
			$rcpt_to = $this->get_address($rcpt_to);
			if (!$this->smtp_sockopen($rcpt_to)) {
				$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
				$sent = FALSE;
				continue;
			}
	
			if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
				$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
			}else{
				$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
				$sent = FALSE;
			}
		fclose($this->sock);
		$this->log_write("Disconnected from remote host\n");
		}
		return $sent;
	}
	/* Private Functions */
	function smtp_send($helo, $from, $to, $header, $body = ""){
		if (!$this->smtp_putcmd("HELO", $helo)) {
			return $this->smtp_error("sending HELO command");
		}
		#auth	
		if($this->auth){	
			if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {		
				return $this->smtp_error("sending HELO command");		
			}		
			if (!$this->smtp_putcmd("", base64_encode($this->pass))) {		
				return $this->smtp_error("sending HELO command");		
			}
		}	
	
		if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {	
			return $this->smtp_error("sending MAIL FROM command");
		}
		
		if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {	
			return $this->smtp_error("sending RCPT TO command");	
		}
		
		if (!$this->smtp_putcmd("DATA")){	
			return $this->smtp_error("sending DATA command");	
		}
		
		if (!$this->smtp_message($header, $body)){	
			return $this->smtp_error("sending message");	
		}
		
		if (!$this->smtp_eom()){	
			return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");	
		}
		
		if (!$this->smtp_putcmd("QUIT")) {	
			return $this->smtp_error("sending QUIT command");	
		}	
		return TRUE;	
	}
	
	function smtp_sockopen($address){	
		if ($this->relay_host == "") {	
			return $this->smtp_sockopen_mx($address);	
		}else{	
			return $this->smtp_sockopen_relay();	
		}	
	}
	
	function smtp_sockopen_relay(){	
		$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");	
		$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);	
		
		if (!($this->sock && $this->smtp_ok())) {
			$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");	
			$this->log_write("Error: ".$errstr." (".$errno.")\n");	
			return FALSE;	
		}
	
		$this->log_write("Connected to relay host ".$this->relay_host."\n");		
		return TRUE;	
	}
	
	
	
	function smtp_sockopen_mx($address){	
		$domain = ereg_replace("^.+@([^@]+)$", "\1", $address);	
		if (!@getmxrr($domain, $MXHOSTS)) {
			$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");	
			return FALSE;
		}
	
		foreach ($MXHOSTS as $host) {	
			$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");	
			$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);	
			if (!($this->sock && $this->smtp_ok())) {	
			$this->log_write("Warning: Cannot connect to mx host ".$host."\n");	
			$this->log_write("Error: ".$errstr." (".$errno.")\n");	
			continue;
			}	
		$this->log_write("Connected to mx host ".$host."\n");	
		return TRUE;	
		}
		$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");	
		return FALSE;	
	}
	
	function smtp_message($header, $body){	
		fputs($this->sock, $header."\r\n".$body);	
		$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));	
		return TRUE;	
	}
	
	function smtp_eom(){	
		fputs($this->sock, "\r\n.\r\n");
		$this->smtp_debug(". [EOM]\n");	
		return $this->smtp_ok();	
	}
	
	function smtp_ok(){	
		$response = str_replace("\r\n", "", fgets($this->sock, 512));	
		$this->smtp_debug($response."\n");	
		if (!ereg("^[23]", $response)){	
			fputs($this->sock, "QUIT\r\n");	
			fgets($this->sock, 512);	
			$this->log_write("Error: Remote host returned \"".$response."\"\n");	
			return FALSE;	
		}	
		return TRUE;	
	}
	
	function smtp_putcmd($cmd, $arg = ""){	
		if ($arg != "") {	
			if($cmd=="") $cmd = $arg;	
			else $cmd = $cmd." ".$arg;
		}
			
		fputs($this->sock, $cmd."\r\n");	
		$this->smtp_debug("> ".$cmd."\n");	
		return $this->smtp_ok();	
	}
	
	function smtp_error($string){	
		$this->log_write("Error: Error occurred while ".$string.".\n");	
		return FALSE;	
	}
	
	function log_write($message){
		$this->smtp_debug($message);
		if ($this->log_file == ""){
			return TRUE;
		}
	
		$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;	
		if (log_file>!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))){	
			$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
			return FALSE;
		}	
		flock($fp, LOCK_EX);
		fputs($fp, $message);
		fclose($fp);
		return TRUE;
	}
	
	function strip_comment($address){	
		$comment = "\([^()]*\)";	
		while (ereg($comment, $address)){	
			$address = ereg_replace($comment, "", $address);	
		}	
		return $address;	
	}	
	
	function get_address($address){	
		$address = ereg_replace("([ \t\r\n])+", "", $address);	
		$address = ereg_replace("^.*<(.+)>.*$", "\1", $address);	
		return $address;	
	}
		
	function smtp_debug($message){	
		if ($this->debug) {	
			echo $message;	
		}	
	}
	function base64($str){
		return "=?".$this->charset."?B?".base64_encode($str)."?=";
	}	
}
?>